Graft Copolymerizations of Polysaccharides. II. Acrylamide Grafting to Yellow Dextrin
作者:
H Pledger,
G.-S. Wu,
T.S. Young,
T.E. Hogen-esch,
G.B. Butler,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1985)
卷期:
Volume 22,
issue 9
页码: 1297-1307
ISSN:0022-233X
年代: 1985
DOI:10.1080/00222338508063334
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Graft copolymers of acrylamide and yellow dextrin were prepared using cerium(IV) as initiator. The yellow dextrin had a very broad molecular weight distribution but was fractionated utilizing dialysis and ultrafiltration membranes. Initiator efficiencies were determined using size exclusion chromatography and were found to be between 2.4 and 34%. Initiator efficiency increased with acrylamide concentration at constant cerium (IV) and yellow dextrin concentrations, and decreased with increasing cerium(IV) concentration at constant acrylamide and yellow dextrin concentrations. Plots of acrylamide conversion and intrinsic viscosity vs initial acrylamide concentration at constant yellow dextrin and ceric ion concentrations showed a maximum at about 2.0 M.
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